MySQL/ThinkPHP5去重，查询重复数据并列出，删除重复数据只保留一条
MySQL查询重复数据并列出 SELECT FieldName,count(*) AS count FROM TableName GROUP BY FieldName HAVING count> 1; 大于1条的都列出。 MySQL删除重复记录只保留一条 DELETE from TableName WHERE ...
不再关注网络安全
MySQL查询重复数据并列出 SELECT FieldName,count(*) AS count FROM TableName GROUP BY FieldName HAVING count> 1; 大于1条的都列出。 MySQL删除重复记录只保留一条 DELETE from TableName WHERE ...
体验盒子
